目的：评估超脉冲二氧化碳(CO₂)激光治疗不同类型眼睑肿物的疗效和安全性。方法：纳入50例眼睑肿物患者，其中男12例、女38例。患者年龄4~84岁。肿物类型包括眼睑色素痣、睑黄瘤、分裂痣、眼睑疣等，其中25例累及眼睑灰线，10例肿物直径>10 mm。所有患者接受超脉冲CO₂激光治疗，并进行术后随访。治疗效果通过术后数码照片评估，同时记录术后1个月并发症发生情况。结果：50例眼睑肿物总体治愈率为92%，有效率达到100%。4例眼睑色素痣在治疗后1个月内复发。术后并发症主要包括轻微倒睫(5例)、睫毛稀疏部分缺失(4例)和瘢痕增生及色素沉着(4例)，未出现其他严重并发症。结论：对于眼睑肿物，特别是睑缘肿物及大肿物，超脉冲CO₂激光是一种更为精确、微创、安全有效的治疗方法，可作为眼睑肿物治疗的优选方案。

Objective: To evaluate the efficacy and safety of ultrapulse carbon dioxide (CO₂) laser in the treatment for various types of eyelid tumors. Methods: A total of 50 patients, including 12 males and 38 females,with eyelid tumors were included in the study The age range is  from 4 to 84 years, with an average age of 37.9±20.0 years. The tumors found in our study include eyelid pigmented nevus, xanthelasma, divided nevus, and molluscum. Among them, 25 cases involved the gray line of the eyelid,and 10 cases had a tumor diameter greater than 10 mm. All patients underwent ultrapulse CO₂ laser treatment and postoperative follow-up. The treatment outcomes were assessed through digital photos, and complications were recorded one month after surgery. Results: The total cure rate of the 50 cases of eyelid tumors in our study was 92%, with the effective rate reaching 100%. 4 cases of eyelid pigmented nevi recurred within one month after treatment, while all other patients were cured. Postoperative complications mainly included minor trichiasis (5 cases), partial sparse to absent eyelashes (4 cases), and hypertrophic scar with hyperpigmentation (4 cases). No other serious complications were reported in our study. Conclusions: For eyelid tumors, especially eyelid margin and larger tumors, the ultrapulse CO₂ laser is a more precise, minimally invasive, safe and effective treatment method. It can be used as a preferred treatment option for eyelid tumors, and should be promoted widely in clinical practice.

Aims: Divided nevus of the eyelid is a congenital pigmented nevus that impacts eyelid function and aesthetics. While surgical excision and laser ablation are current treatment options, they have limitations when dealing with large lesions. This study aims to investigate the efficacy and safety of carbon dioxide (CO₂) laser excision treatment for divided nevus of the eyelid. Methods: This retrospective study included 10 patients (5 males, 5 females) with a mean age of 23.7 years (9-54 years). All underwent CO₂ laser excision and were followed up for 12 months. Treatment outcomes were assessed through clearance and recurrence rates, evaluated using digital photography. Postoperative complications were closely monitored throughout the 12-month follow-up period. Patient satisfaction was assessed using a comprehensive questionnaire. Results:All patients presented with unilateral divided nevus of the eyelid, with lesion diameters ranging from 25 to 50 mm and heights ranging from 0.3 to 6 mm (mean: 3.93 mm). Patients received between 1 and 5 laser treatment sessions. At the 12-month follow-up, a 100% clearance rate was achieved, with no recurrence observed in any patient. All patients maintained a continuous eyelid margin with acceptable irregularity. Complications were minimal, with partial eyelash loss in 8 patients, hyperpigmentation in 2 patients, and mild upper eyelid trichiasis in 1 patient. No severe complications, such as ectropion, eyelid margin notching, corneal erosion, or significant scar hypertrophy, were reported. All patients expressed being "very satisfied" with the functional and cosmetic outcomes in a questionnaire. Conclusions: CO₂ laser excision offers a simple, precise, and effective treatment approach for divided nevus of the eyelid. This innovative technique simplifies the treatment process, achieves excellent cosmetic outcomes, and eliminates the need for skin grafting, making it a promising option for the management of large divided nevus.

Aims: Divided nevus of the eyelid is a congenital pigmented nevus that impacts eyelid function and aesthetics. While surgical excision and laser ablation are current treatment options, they have limitations when dealing with large lesions. This study aims to investigate the efficacy and safety of carbon dioxide (CO₂) laser excision treatment for divided nevus of the eyelid. Methods: This retrospective study included 10 patients (5 males, 5 females) with a mean age of 23.7 years (9-54 years). All underwent CO₂ laser excision and were followed up for 12 months. Treatment outcomes were assessed through clearance and recurrence rates, evaluated using digital photography. Postoperative complications were closely monitored throughout the 12-month follow-up period. Patient satisfaction was assessed using a comprehensive questionnaire. Results: All patients presented with unilateral divided nevus of the eyelid, with lesion diameters ranging from 25 to 50 mm and heights ranging from 0.3 to 6 mm (mean: 3.93 mm). Patients received between 1 and 5 laser treatment sessions. At the 12-month follow-up, a 100% clearance rate was achieved, with no recurrence observed in any patient. All patients maintained a continuous eyelid margin with acceptable irregularity. Complications were minimal, with partial eyelash loss in 8 patients, hyperpigmentation in 2 patients, and mild upper eyelid trichiasis in 1 patient. No severe complications, such as ectropion, eyelid margin notching, corneal erosion, or significant scar hypertrophy, were reported. All patients expressed being "very satisfied" with the functional and cosmetic outcomes in a questionnaire. Conclusions: CO₂ laser excision offers a simple, precise, and effective treatment approach for divided nevus of the eyelid. This innovative technique simplifies the treatment process, achieves excellent cosmetic outcomes, and eliminates the need for skin grafting, making it a promising option for the management of large divided nevus.

二氧化碳(carbon dioxide, CO₂)激光通过气体混合物激发产生红外光，组织水分高度吸收后引发汽化和局部热效应，能够精确封闭小血管和淋巴管。这些特性使得CO₂激光在组织切割过程中能够最大限度地减少出血，提高术中视野的清晰度，缩短手术时间，并减轻术后肿胀、瘀斑及疼痛。在眼整形外科，特别是处理眼周复杂病例方面，CO₂激光展现了显著的优势。文章对CO₂激光在眼整形外科中的应用进行综述，包括眼睑肿物切除、泪小管炎治疗、瘢痕治疗、皮肤松弛治疗以及眼袋去除等，旨在为临床医生和研究人员提供关于CO₂激光在眼整形外科中的全面参考，帮助其了解该项技术的优势、效果及术后并发症，以更有效地应用于实践并探索未来发展。

The carbon dioxide (CO₂) laser generates infrared light through the excitation of a gaseous mixture. When this infrared light is highly absorbed by tissue water, it triggers vaporization and localized thermal effects, enabling precise sealing of small blood vessels and lymphatic vessels. These properties allow the CO₂ laser to minimize bleeding during tissue dissection, enhance intraoperative visual field clarity, reduce operative time, and alleviate postoperative swelling, ecchymosis, and pain. The CO₂ laser has demonstrated significant advantages in oculoplastic surgery, particularly in the management of complex periorbital cases. This article reviews the applications of the CO₂ laser in oculoplastic surgery, including eyelid tumor excision, treatment of canaliculitis, scar management, skin laxity treatment, and removal of eye bags. It aims to provide clinicians and researchers with a comprehensive reference on the use of the CO₂ laser in oculoplastic surgery, helping them understand the advantages, effects, and postoperative complications of this technology, in order to more effectively apply it in practice and explore future developments.